Following several meetings of this umbrella group, the website is up! This is a loose network covering 84 food growing groups in the borough that has started to make links with statutory agencies including the NHS and Lambeth Council around overlapping and varied goals. Basically there are lots of different reasons to get into food and growing, from health and community cohesion to food security and climate change.
Take a look at http://www.incredibleediblelambeth.org/